§-Marine Science syllabus
QLD · QCAA← Marine Science
Marine Science syllabus, dot point by dot point
Every dot point in the QLD Marine Science syllabus, with a focused answer for each. Click any dot point for a worked explainer, past exam questions and links to related points.
Unit 3: Marine systems - connections and change
Module overview →How are marine organisms adapted to survive the physical and biological challenges of the ocean?
Explain how structural, physiological and behavioural adaptations allow marine organisms to survive abiotic challenges such as salinity, pressure, temperature, light and wave action
How do scientists classify marine organisms and how is marine biodiversity organised and measured?
Describe how marine organisms are classified using the taxonomic hierarchy, explain the major groups found in marine systems, and describe how biodiversity is measured and why it matters
How are marine ecosystems connected and how does that connectivity maintain them?
Explain the connectivity between marine ecosystems (mangroves, seagrass meadows, coral reefs) through the movement of energy, nutrients, larvae and organisms, and describe the consequences of disrupting these connections
How does the coral polyp work and why is its partnership with zooxanthellae so important?
Describe the structure and feeding of the coral polyp, explain the mutualistic symbiosis between coral and zooxanthellae, and describe how corals grow and reproduce to build reefs
How are coral reefs structured and what abiotic factors control their distribution?
Describe the structure and zonation of coral reefs (fringing, barrier, platform, atoll, coral cay) and explain the abiotic factors that control where reef-building corals grow
How does energy flow and how do nutrients cycle through marine ecosystems?
Explain energy flow through marine food webs (producers, consumers, trophic levels, productivity) and the cycling of carbon and nitrogen in marine ecosystems
How do mangroves survive their harsh intertidal environment and what role do they play in marine systems?
Describe the adaptations of mangroves to salty, waterlogged, low-oxygen mud, and explain their ecological roles as nurseries, sediment traps and coastal protectors
How is the ocean divided into zones and how do conditions change with depth and distance from shore?
Describe the division of the ocean into pelagic and benthic realms and into depth zones, and explain how light, temperature, pressure and food availability change across them
How do abiotic factors structure oceanic environments and the distribution of marine life?
Describe the key abiotic factors of marine environments (light, temperature, salinity, dissolved gases, pressure, nutrients) and explain how they vary with depth and latitude to structure oceanic zones
What is plankton and why is it the foundation of marine food webs?
Distinguish phytoplankton from zooplankton, explain their role as the base of marine food webs, and describe the microbial loop and how plankton support fisheries and the carbon cycle
What controls primary productivity in the ocean and how is it measured?
Define gross and net primary productivity, explain the abiotic factors that limit marine primary production, and describe how productivity is measured and where the most productive marine zones occur
Why are seagrass meadows so productive and important to connected marine systems?
Describe seagrasses as flowering marine plants, explain their adaptations and high productivity, and describe their roles as habitat, food source, sediment stabiliser and carbon store
Unit 4: Ocean issues and resource management
Module overview →How does aquaculture work and can it provide seafood sustainably?
Describe aquaculture and its main methods, explain its benefits and environmental impacts, and evaluate its sustainability compared with wild-capture fisheries using Australian examples
How is climate change altering oceans and what are the consequences for marine ecosystems?
Explain how rising carbon dioxide drives ocean warming, coral bleaching, ocean acidification and sea level rise, and describe the consequences for marine ecosystems such as the Great Barrier Reef
What causes coral bleaching, what happens to the reef, and can it recover?
Explain the physiological mechanism of coral bleaching, describe the conditions that trigger mass bleaching, and evaluate the prospects for reef recovery using Great Barrier Reef events
How are fisheries and marine resources managed sustainably for the future?
Explain the concepts of maximum sustainable yield, overfishing and bycatch, and evaluate fisheries and marine management strategies (quotas, marine protected areas, zoning) using Australian examples
How do human activities degrade marine environments and what processes are involved?
Describe the major human impacts on marine environments (pollution, runoff, plastics, dredging, crown-of-thorns outbreaks, coastal development) and explain the processes by which they degrade ecosystems such as the Great Barrier Reef
How do plastics, oil and excess nutrients pollute marine systems and harm marine life?
Describe the major types of marine pollution (plastics, oil, nutrients and sediment) and explain their sources, impacts and the mechanism of eutrophication, using Great Barrier Reef examples
How do marine protected areas and zoning work, and how effective is the Great Barrier Reef Marine Park zoning plan?
Describe how marine protected areas and zoning manage human use, and evaluate the effectiveness of the Great Barrier Reef Marine Park zoning plan using evidence
What drives global ocean circulation and how does the East Australian Current affect Australian seas?
Explain how surface and deep ocean circulation are driven by wind, density and the Coriolis effect, and describe the East Australian Current and the global thermohaline conveyor
Why is sea level rising and how does it threaten coasts and coastal ecosystems?
Explain the causes of sea level rise (thermal expansion and ice melt), describe its impacts on coastlines and coastal ecosystems, and evaluate adaptation responses using Australian examples
What makes a fishery sustainable and how are overfishing and bycatch managed?
Explain overfishing and bycatch, describe the methods used to manage fisheries sustainably (quotas, size and gear limits, seasons), and evaluate their effectiveness using Australian examples
How does the ocean store and cycle carbon and why does this matter for climate?
Describe the ocean as a major carbon sink, explain the solubility and biological carbon pumps and the role of blue carbon, and explain how a warming ocean affects carbon uptake
How do tides, waves and currents move water, sediment and nutrients, and shape coastlines?
Explain the causes of tides, waves and ocean currents, and describe how water movement transports sediment and nutrients and shapes coastlines through erosion and accretion